Plant for producing compressed air



Det. 2.1, 1930. n E sTlEFEL 1,778,988

PLANT FOR PRODUCING COMPRESSED AIR Filed Sept, 29, 1928 i30parts in both views.` Y .v

' Referring to the drawing,`a two-stageroi raramente 2i, i930 e' ERNST STIEFEL; QEBAMA. swirz'ERLANDV .1

PLANTron PRODI-Toine coiviirnnssrn)am@E vApplica/ign ineaY september 29, 192s, semaine. 309.2623.A yand Yiii srwijz"@figura october'iei, '192'.71.,

rilhis invention relates to plants for pro- 'ducingv compressed air comprising a multie stage oi:mult1stage vrotary aircoinpressor.

lt consists in .arranging the rotary compresy 5 sor with its driving machine on a. container or tank whereof the insideserves for holding a cooling medium, e. g. water, rand cleaning devices for the delivered compressed'. air.`

Preferably,the compressed air passing from y l0 one stage" to another of the lrotary compres- -sor is cooled by means ofcooling tubesfinr.

the tank, and the compressed air delivered from the last stage is passed, for the purpose of purifying and cooling it', through thejcool`- Y "l5 ing medium in the tank. Furt-lienaccording to another featurev of the inventiomfthe delivered 'air may bev 'sent through a 'iilter'in the `upper part of the tankv after flowing `through the cooling mediumLbut befo'renarf*A rival at its placeof use. Y Y e One 'embodiment' of .the invention vis. di-

agrainmaticallyV illustrated by Way of'eX ample :in the wherein LFigure 2 is a transverse'section taken(A through one form of compressed-air plant according tothe invention. v e., Like kreference Vcharacters 'designate like tary air-compressor 1 havin'gfa Vfirst stage 2and a seconds-tage 3 is driven by `any convenient driving machine, for example. van

` rollers 6. Atmospheric airis introduced through a suction filter 7 into the firststage 1 andleavesthe same through a, pipe 8'which y C? leads through a vcoolin'ggcoil 9gin ythe tank.

5 illed with a coolingme'dium, such as water,

up to the height yindicated at l10. The air` cooled in thecoil 9 passes'through the pipe 11 into the second stage of the compressor 7 and leaves the latter at lthe pressure generated therein through the pipe 12. VThis pipe 12 is` electric motor 11.1 yThefcompressor ismountedj on a'container or tank 5 which may reston.

escaping upwards throughY the vppeiforations,

this manner passesinto an outlettube 14a-tor j near the topf'oflthe'tank and V'palss'es'wthence' through a delivery-, pipe V1 5 to vitsfpl'a'ce of* are arranged between the compressor land tank ofthe described unitary structure.AA As.

theinterior of the tank 'iis subjected to the :pressure produced bythe pump'` 1, theitank e mu'st be made suliiciently strong towith'stand`A` f, r it; tliercylindrical form, as shown yinFiguren'.f.A y v.

2, is therefore particularly suitable foritg.

Various modifications maybe made inthe f 7o* Y e.

details of construction described above with? out departing from theinvention.' f

, ,1.,In aplant for producingico'mpressedair, l l y y the combination "with a container `adapted to -v hold acooling medium, a two-stageairfcom-- 'presser and driving machine therefor mounteV eden the container, a kcooling device injthef` I 'i" "container, a purifying devicefinthe container,

said coolingde'vicelandpurifying.devicebeing fsubmerged inth'e ycooling medium, andpip'e so. f

connectionsbetween the compressor`,"coolin'g v air through the purifying device;V y l. Y

the combination fof a V'container adaptedto f device' and purifying device for conducting i 2.V In a plant for producing compressed air,V e

e5 ahold a cooling medium, a multi-stage air Q compressor andam'otor for drivingthe same lmounted thereon, acoolilngdevicev inthe' cooling medium rand lcoi'inectedf between two stages ofthe compressor, and means for pass-j ing the air. delivered from thelast stage of the 'Compressor through thevcooling medium.

- .3. In a plantfor producing compressed air, the combinationof 4a container .adaptedV to L hold a. cooling-medium in the lower partthereof, a two-stage air compressorl and amotor fordriving the same mounted on thek container, akfilter in the upperpart of the container'in front of 'the'outlet inthe 'latten ,100 .Y

va cooling device in'thewlower 'partof the con-'-l t-ainer,` a purifying device in thel coolin medium and in connection with the filter, an

Y pipe connectionsbetween said compressor, f

' p ceoling device and purifying devicefor passf ing air through the latter to the 'lter. Y p

4:. In lav plant for compressing air, a unitary" v v structure comprising the eolnloinattionA 0f fa .1 hOriZo'nte!eylin'drice1 tank Vhaving an;V outletI I in theupper partnthereofp tWO-tage'rotary f 10 v air compressor and motor for driving the f samemounted onthe tankg-the-1Uwer partoiffV the tank being adapted to holdv a cooling medium, a ilterv for air-Fin'tiefupperpart of the tankin front of said Outlet above thereoel- Y med-iurnand connected between the two Stages pf thefifi,O13315SSOf 1',L and a'perfratedpipe in y the eeling niediuml'and eunnected YtoV the de- 'liv :y sideeffthe secendstageforfthe'eornf testimony. Wheregif `signature'. Y 1 AERNST STIEFEL- 

